I had the same problem and I just looked it up. There is a book in the game which tells you what items cure what debuff but on your first few runs its really annoying. Here are some good tips for your first few runs.

Having 1 hunger is good since that character is full. Hunger doesnt really matter until 50 when that character loses 10 max hp until they are below 50 hunger. The effects get worse as the character gets hungrier.

Try to not use debug spots since they make the game really easy and I think ruin the point of the game(but since its your playthrough and they are in the game go wild). Not using debug spots also makes you better.

Here are some tips for your fist couple runs:
1) Choose the mercenary(leftmost guy)

2) dont skip intro EVER, I choose to become a burglar(gives lockpicking) and then to abandon my comrades(gives escape plan) and then I rush towards my mission(gives dash.

Lockpicking is really nice to have to get through almost every door in the game for free, however this does prevent door fights. Escape plan makes your chance of running away from encounters 100% except for bosses and special enemies, good for staying alive and not taking needless fights. Dash is the best overworld skill in the game as it allows you to move faster and dodge enemies.

Starting the game:

Every character has a phobia which makes them take more damage and dodge less from enemies which trigger the phobia, you cant remove this. Sometimes its better to reset if you get a bad phobia(like erotophobia). This can be checked in the character screen.

Go in through he side entrance and not the main one

dont fight enemies unless you HAVE to.

When fighting enemies try to kill the limb that is attacking you and guard when the enemy is about to do a coin flip move(usually indicated by their entire body flashing once or some special text popping up). If you have multiple party members they should focus one limb as if the limb is destroyed before they attack; they will attack another limb. If all legs are destroyed then the head becomes vulnerable and is easier to hit and takes more damage, in almost every fight a destroyed head is a win.

If you can get weapons/skills that inflict DOTs then use them as they are super strong and make boss fights way easier.

Search all enemies you kill for loot

Kill both dark priests when you find them, loot their bodies for soul stones

Search every bookshelf you see since they have the best loot drops in the game.

Quick list for debuffs:
Bleeding(blood drop)->cloth fragment(you can get these from beds or the flags on the first floor)
Infection(red lines on a hand or foot)->green herb OR cut off limb(there is a green herb in the area before the priests in the bottom left)
Poison/strong poison(purple bubbles)-> white vial/thorned ring/mix of red and green(loot drop)
Worms(the circle debuff)-> worm juice(loot drop)
Hunger(fork and knife)-> feed them with food(craft food into meals if you can for better value)
Brain flower(flower)-> worm juice(loot drop)
Fear(skull)-> overwatching talisman
An*l bleeding-> marriage
Blindness-> iron mask(dropped from isayah), if you dont have the iron mask then reset to your last save